Answer:
A- Astronomical body
C- Galaxy
D- Comet
B- Moon
Hope this helps you! Have a great day!
The force and the air resistance depends on the mechanical enserfy.
Answer:
5 m/s2, left
Explanation:
We can solve the problem by applying Newton's second law of motion, which states that:

where:
is the net force acting on an object
m is the mass of the object
a is its acceleration
In this problem, we have:
(to the left) is the net force on the object
m = 2.0 kg is the mass
So, the acceleration is:
in the same direction as the force (left).
Hookes law state that provided that the elastic limit is not exceeded, the extension is directly proportional to the force
Answer: Dark matter.
Explanation: Hope it helps :)